Improved non-corrosive cast-iron pump



5mm @man Letters .Patent No. 90,586, dated May 25, 1869.

IMPROVE!) NON-CORROSIVE CAST-IRON' PUMP.

The Schedule referred to n these Letters Patent and making part of the lame,

To all whom 'it mwy concern:

Be it known that I, JOHN A. RUMsEY, of Seneca Falls, in the Acounty of Seneca, and State of New York, have invented a new and useful article of manufacture, which 1 call Galvanized Pumps, and do hereby declare that the following is a full, clear, and exact description of the same.

The pumps are cast in the usual way, from iron, or other' metals.V

When the castings, comprising the different part-s' of the pump, such as the cylinder, plunger, valves, and all of those parts. with which the Water cornes in contact, are prepared, or ready for use, by boring, polishing, scouring, or other process, to make them oi' a smooth and uniform surface, they are galvanized, or coated with zinc, by any of the Well-known processes in use for that purpose, thus preventing the casting from rusting, it being well known that when cast-iron is used in pumps, for pumping and raising Water and other liquids, the Water standing in the pumpchamber soon becomes rusty and unfit for use, and that the rust settles-on the valves in the pumps, and, in' a short time', the leather packingand valves become crusty and sti, permitting the Water to run down out of the pump, and necessitating the taking apart of the pump, and the renewing of such parts.

I am aware that various articleshave beengalvanized for the purpose of preventing the injurious action 

